Cultivating-plow



(No Model.)

R. W. WHITEHURST.

Cultivating Plow.

No. 236,743. I Patentedlan. 18,1881.

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ROBERT W. WHITEHURST, OF NORFOLK, VIRGINIA.

CULTlVATING-PLOW.

SPECIFICATION forming part of Letters Patent No. 236,743, dated January18, 1881.

Application filed November 29, 1880. (No model.)

To all whom it may concern:

Be it known that I, RoB'r. W. WHITEHURs'r, a citizen of the UnitedStates, residing at Norfolk, in the county of Norfolk and State ofVirginia, have invented certain new and useful Improvements inCultivating-Blows; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersor figures of reference marked thereon, which form a part of thisspecification.

The present invention relates to certain improvements incultivating-plows, which will tirst be described, and then designated inthe claim.

In the drawings'hereto annexed, Figure 1 is a side View of the plowwithout the beam or handles. Fig. 2 is a top view of the same. Fig. 3 isa cross-section of rear standard, showing the sweep-holders. Fig. 4 is aperspective of the sweep-holder. Fig. 5 is sweep.

The letter A designates the standard; B, the point, and O O the twomold-boards. It will be noticed that one mold-board laps over the edgeof the other, as shown plainly in Fig. 2, whereby the cutting-edge a isformed wholly on one board, and is devoid of crevice or joint, as in thecase of those cultivators whose two mold-boards have the abutting edgeof each beveled alike, forming the cutter of an edge of each board.

By the arrangement herein shown the objection referred to, of thecrevice at the out ting-edge, isjavoided. In the present instance abolt, b, is passed through the two moldboards and standard; but they maybe socured otherwise.

A land-bar, D, extends from the foot rearwardly, and is shod on itsunder side with a plate, I). To the upper side of the land-bar isattached a rear standard, E, which rises up and extends obliquelyrearward. The upper end of this rear standard and the top of the frontstandard are connected by a bar, F, to a portion, F, of which thedraftbeam (not shown) is secured.

The handles, of which only a broken part of one is shown, are attachedto the rear standard, one on each side. The lower end of the handle Grests in the sunk panel or socket c on the side of the standard,where itis bolted through the hole (I. At the upper part of the rear standard,on each side, is a lateralprojecting shoulder or lug, e, in suchposition as to serve as a support for the handle which rests upon it. Abolt-hole,f, through the standard, near the lugs, provides for boltingthe two handles together. By the lug which projects from each side ofthe standard great stability is given to the handles.

A portion of the rear standard, E, has a vertical slot, g, and the edgesof the standard parallel with the slot are raised, as at h. (Shownplainly in cross-section in Fig. 3.) Each sideof the standard isprovided alike with the raised edges h, which form a guideway.

A right-angled sweep-holder, I, has a slot, k, on one part, the edges ofwhich are straight and parallel, and the said part is of width to restbetween the raised edges h on the standard E, where it may have avertical sliding movement, the slot 9 in the standard, and the slot isin the holder, through which a bolt, m, passes, affording everyfacilityfor the separate or independent vertical adjustment ofeither ofthe two holders. The other part of the right-angled holder has a hole,a, for a bolt, n, on which the sweep or wing L pivots,

and said part also has a notched or toothed edge, 19, which isconcentric with the pivotinghole a. r

The sweep or wing L is a blade, having at one end a head through whichthe bolt 11/ passes. The broad sides of the blade are in an oblique orangular position with respect to the head, in order to better turn orthrow off the dirt that falls from the mold-board. The lower edge of theblade next to the head (see Figs. 1 and 5) forms a shoulder or point, g,which engages with one of the notches p on the holder.

It will be seen, by removing the nut from the bolt 'n, the point q ofthe sweep may be set in either of the notches p of the holder, and thusthe sweep may be adjusted forward or back in any position desired,tothrow more or less dirt, and yet the means of adjustment are such thatthe sweeps move in the same horizontal plane.

I am aware that sweeps have been arranged to permit of adjustmentforward and back; but such as I am familiar with are so arranged thatwhen moved back the outer end is also raised, and when moved forwardthey are lowered.

The right-angled holder herein shown provides for all manner ofadjustments for the sweep within the range of both vertical andhorizontal, so that a greater range of work may be done than heretofore.

One sweep may be worked high up and the other low down, and one may beextended to throw dirt on one side while the other may be adjusted backand, by causing some draft, made to act simply as a counter-balance.

Having described my invention, I claim and desire to secure by LettersPatentof the United States- In a 'cultivatin g-plow, the combination,with the standard E, of the'sweep-holder I, having the notches p, andadapted to be verticallyadjusted on the plow, and the sweep L, having atooth or point, q, for engagement with the notches, whereby the sweepmay be adjusted vertically and forward and back without changing itshorizontal plane, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT WV. WHITEHURST.

Witnesses Jim. T. MADDOX, CHAS. B. MANN.

